Layer 1 Reports With Reception Beam IDs for Beam Pair Prediction
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Solution Overview
Problem
Existing wireless communication systems, particularly 5G NR, face challenges in efficient beam management, leading to increased latency and power consumption due to the need for extensive beam sweeping and inadequate utilization of Layer 1 (L1) reports for beam pair predictions.
Innovation Solution
Enhanced Layer 1 (L1) reports are implemented that include measurements and reception beam identifiers for channel measurement resources, enabling base station-aided beam pair predictions and reducing the number of beams swept, along with report compression, CSI partitioning, and TCI state activation/switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If extensive beam sweeping is performed to ensure accurate beam management, then beam management accuracy is improved, but latency and power consumption increase
Solution Approach 1:
The patent applies preliminary action by having the UE measure and report L1 metrics for multiple beams in advance before the actual beam management decision is needed. The UE measures L1-RSRP or L1-SINR for multiple candidate beams and reports these measurements to the gNB, enabling the gNB to make informed beam selection decisions without requiring extensive real-time beam sweeping, thereby reducing latency while maintaining accuracy.
Solution Approach 2:
The patent implements feedback mechanisms where the UE reports measured L1 metrics back to the gNB, and the gNB uses this feedback information to determine the best beam pair. The feedback includes L1 measurement reports that contain beam identification information and measurement values, enabling iterative optimization of beam selection based on actual channel conditions without requiring exhaustive beam sweeping each time.
2Measurement precision
If extensive beam sweeping is performed to ensure accurate beam management, then beam management accuracy is improved, but power consumption increases
Solution Approach 1:
The patent applies partial action by having the UE measure and report L1 metrics for a limited set of candidate beams rather than all possible beams. The gNB configures the UE to measure beams based on previously indicated beam pairs or candidate beams, which reduces the total number of measurements required compared to exhaustive beam sweeping, thereby lowering power consumption while maintaining sufficient accuracy for beam management decisions.
Solution Approach 2:
The patent uses preliminary action by pre-configuring the UE with beam identification information and measurement configurations before actual beam management operations. The UE measures and reports L1 metrics in advance for multiple beams, and the gNB uses this pre-collected information to make beam selection decisions, reducing the need for power-intensive real-time beam sweeping and enabling more efficient beam management with lower UE power consumption.
3Measurement precision
If L1 reports are enhanced with reception beam identifiers, then beam pair prediction accuracy is improved, but report size and processing complexity increase
Solution Approach 1:
The patent applies segmentation by dividing the L1 report into structured components that include beam identification information, measurement values, and associated metadata. The report is segmented into fields such as beamID, L1-RSRP or L1-SINR measurements, and quality indicators, allowing the gNB to process each component systematically. This structured segmentation enables accurate beam pair prediction while managing processing complexity through organized data presentation.
Solution Approach 2:
The patent implements local quality by including reception beam identifier information specifically associated with each measurement entry in the L1 report. Rather than providing uniform treatment of all beam measurements, the report includes localized beam identification data (such as beamID or TCI state information) for each measured beam, enabling precise beam pair predictions while keeping the overall report structure manageable and processable.
Data Source
AI summary
An apparatus for wireless communication at a UE is disclosed. The apparatus comprises memory and at least one processor coupled to the memory. The apparatus is configured to measure a CMR for each of one or more downlink transmission beams. The apparatus is further configured to transmit a L1 measurement report including one or more measurements for the CMR and a reception beam identifier (ID) for a reception beam for each of the one or more measurements. Different measurements associated with a same CMR are associated with different UE identified reception beams